ok wrote:
I believe the author may have misunderstood "numerically stable".
The obvious (sum xs)/(fromIntegral $ length $ xs) is fine for
the mean,
That's probably my fault, out of ignorance. Do you know a good online
resource about numeric stability? (I don't have the Knuth at home.
Didn't he say something about the mean formula? Or was it the standard
derivation?).
Regards,
apfelmus
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